11/14/19

Fluorine gas and water vapor react to form hydrogen fluoride gas and oxygen. What volume of hydrogen fluoride would be produced by this reaction if 4.8 cm^3 of fluorine were consumed?

Answer has a unit symbol, and is rounded to the correct number of significant digits.
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11/14/19

Chemistry: Molarity

Calculate the molarity of each of the following solutions: (a) 293g HCl in 666mL of solution, a concentrated HCl solution(b) 2.0226 g FeCl3 in 0.1250L of a solution used as an unknown in general... more
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11/14/19

Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas. What volume of water would be produced by this reaction if 7.7 cm^3 of hydrogen chloride were consumed?
Answer has a unit symbol, and is rounded to the correct number of significant digits.
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11/13/19

chemistry qusetion
Write the thermochemical equation that would be used to represent the standard heat of formation of KBr(s).and Determine ∆Hf°
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11/13/19

Coffee Cup Calorimetry
When 0.876 g of CaCl2(110.98 g/mol) is added to 95.0 gof water at 22.4°C in a ‘coffee-cup’ calorimeter, the temperature of the resulting solution increases to 29.7°C. The specific heat capacityof... more
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11/13/19

What is the actual yield?
Sb+O2→Sb4O6If an excess amount of Sb reacts with 1.87 g of O2 during a lab, what is the actual yield, in g, produced?
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11/13/19

What is the excess reactant?
At the beginning of the reaction, it is measured that there are 3.11 g of iron and 4.13 g of copper(II) sulfate.​​Fe+CuSO4→Cu+FeSO4What is the excess reactant? 
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11/13/19

How many L of chlorine gas, at STP, were required if 2.28 mol reacted?
8H2S+8Cl2→S8+16HClHow many L of chlorine gas, at STP, were required if 2.28 mol reacted?
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11/13/19

How many moles of phosphoric acid reacted?
3Hg(OH)2+2H3(PO4)→Hg3(PO4)+6H2OHow many mol of phosphoric acid (H3(PO4)) reacted to form 3.13 x 101 mol of water (H2O)?
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11/13/19

Suppose 22. g of octane is mixed with 98.0 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction.
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11/13/19

Chemical Reaction of Copper (II) Sulfate and Ammonium Chlorate? What would be the net ionic equation?
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11/13/19

themochemistry Q
Given the following thermochemical equations:2NO(g) + O2(g)  2NO2(g) ∆H° = -113.2 kJ2N2O(g) + 3O2(g)  4NO2(g) ∆H° = -28.0 kJСalculate ∆H° for the reaction:N2O(g) + 1/2 O2(g)  2NO(g)∆H =
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11/13/19

Thermo Chem question
What is the thermochemical equation for the formation of 2.5 mol of NH3(g) from H2(g) and N2(g)?First, enter the chemical equation: Then determine ΔH
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11/13/19

Thermochemisty Q
In one experiment, a student placed 50.0 mL of 1.00 M acetic acid (HC2H3O2) at 25.5 °C in a coffee cup calorimeter. To this was added 50.0 mL of 1.50 M NaOH solution. The mixture was stirred, and... more
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11/13/19

Help with IMFs plz
The electron cloud of HF is smaller than that of F2, however, HF has a much higher boiling point than F2 has. Which of the following explains how the dispersion-force model of intermolecular... more
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11/12/19

Themochem delta H
The neutralization reaction between HCl and NaOH results in ∆Hº = -58 kJ·mol-1 HCl. What is the ∆H per mole of NaOH?∆H = ? kJ·mol-1 NaOH
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11/12/19

Thermochemistry Q
A 1.50 g sample of pure sucrose is burned in a bomb calorimeter that has a heat capacity of 8.930 kJ/ºC. The temperature of the water jacket rises from 24.00 ºC to 26.77 ºC.What is ΔE for the... more
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11/12/19

What chemical bonds are present in snow
What chemical bonds are present in snow and what allows snow to build up into a ball or even a snowman without instantly falling apart?
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11/12/19

Thermochemistry question
Since it can be obtained in very high purity, benzoic acid is one of the classic materials used for determining the heat capacity of bomb calorimeters.The heat of combustion of benzoic acid,... more
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11/12/19

thermochemisrty
Silicon, used in computer chips, has a heat capacity of 0.712 J·g-1·°C-1. If 500 J of heat is absorbed by 8.86 g of silicon, what will the final temperature be if the initial temperature is 22.9 °C?
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11/12/19

thermochemistry
The temperature of 293 g of water is changed from 10.6 to 38.9 °C. How much energy was transferred into the water? Calculate your answer in joules, kilojoules, calories, and kilocalories.
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11/12/19

1. A sample of oxygen gas is under a 100.60 kPa pressure, in a 4.69 L container, at 2000C . How many grams of oxygen are present in this sample?
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11/12/19

Balance the molecular equation below and write the balanced complete and net ionic equations for the following unbalanced molecular reaction.
_SrBr2(aq) + _K2SO4(aq) ------> _SrSO4(s) + _KBr(aq)
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11/11/19

Find the concentration in Mass Percent
N2O- Henry's law constant is 3.2 x 10^-5 M torr ^-1. If the partial pressure of nitrous oxide in the lungs is 80 torr what is the molarity of nitrous oxide? Find the concentration in mass percent
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11/11/19

Calculate the concentrations of all gases once equilibrium is reestablished.
For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.22-L rigid container are [H2] = 0.0501 M, [F2] = 0.0104 M, and [HF] = 0.409 M.H2(g) +... more
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